Bobbin support for weft-replenishing looms



C. M. ERLER ET AL BOBBIN SUPPORT FOR WEFT REPLENISHING LOOMS Nqv. 30 1926.

Filed Augus 6, 1925 Patented Nov. 39, 1926.

llhliTED STATES PATENT QFFHCE.

CHARLES M. ERLER AND AUGUSTIN J. CHEVRETTE, 9F WORCESTER, MASSACHUSETTS,

ASISIGNORS TO GROMIPTON 85 KNOWLES LOOM WORKS, 0F "WORCESTER, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

BOBBIN SUPPORT FOR WEFT-REPLENISZ'IING LOOMS.

Application filed August a, was. Serial No. eases.

This invention relates to improvements in bobbin supports for weft replenishing mechanism more particularly of the multi-color type and an object of the invention is to provide a giveway having an end yieldable in all angular directions with respect to the axis of the supporting structure.

In co-pending application Ser. No. 47,145 there is shown a giveway or bobbin support made of tubularsections one of which is held rigidly in place and the other of which has mounted thereon a yieldable nose located under the transferrer mechanism, the tubular sections being relatively yieidable. In said application two springs are mounted within the tubular members one being smaller and weaker than the other and it is possible for one spring to interfere with the action of the other. It is a further object of our present invention to place the stronger of these springs on the outside of the tubular members so that the weaker spring may be free to operate without interference.

It is a still further object of our invention to provide a pair of tubular members held together by a comparatively strong coil spring which frictionally engages both members to permit yielding of the same and has the outer diameter thereof substantially the same as the diameter of the sections so as to present a smooth surface down which a bobbin may roll to transfer position.

With these and other objects in View which will appear as the description proceeds. our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims,

In the accompanying drawings wherein we have shown a convenient form of our invention,

Fig. 1 is a transverse vertical section through a multi-color weft replenishing mechanism having our invention applied thereto,

Fig. 2 is an enlarged vertical longitudinal section through the giveway showing the supporting structure therefor,

Fig. 3 is a section on line 3-3 of Fig. and

Fig. i is a section on line l-4l: of Fig. 2.

Referring to the drawings it will be seen that we have provided a weft replenishing frame havin vertical guides ll in which bobbins are normally disposed as they await transfer. The frame has cast thereon a guide 12 and has movably mounted thereon a support 13 which is pivotally mounted on the lower end of a link let loose on a tie rod 15. Said support 13 has a rearwardly and upwardly extend ng arm 16 which is connected as at 17 to a link 18 pivotally mount ed to the frame as at 19. A spring 20 serves to hold the support or giveway 13 in normal position. The matter thus far described of common construction and may be the same as that shown in Patents No. 1330,7418 and No. 1,366,950.

Our improvements relate to the outer giveway on which normally rests the cylindrical portion of the yarn on the bobbin awaiting transfer. As shown in Patent No. 1 518,392 the outer rear bobbin support enthe yarn between the conical portions thereof and the butt of the bobbin and it is to be understood that our improved support is to be used in the manner as set forth in said patent, although it may also be used satisfactorily to support the wooden tip of the bobbin. In carrying out our invention we provide a bracket fastened to a tie rod 15 by means of screw 31 and split as at 32 to provide a clamp which may be tightsued by screws 33. The bracket may be ad justed to any angular position and has cured therein a tubular section as having a reduced forward end 35. A second tubule section 36 is also pro ided with a reduced rear end 37 substantially the sam diameter as the end and is held in alignment there-- with by a coil spring 38 frictionally held the reduced ends and abutting shoulders 33 and d0 formed on sections 3st and 35, respectively. In order to prevent the spring 38 from being accidentally displaced the c is wound so that the internal diameter thereof is somewhat less than the outside diameter of the reduced end portions 35 and 3?". By means of the construction already de scribed it will be seen that the section 36 is held yieldingly with respectto section 34.

formed in the rear end of nose 41 and is held.

under tension by a screw 44 to which it is attached. Said screw is threaded through a cap 45 held to the rear end of the section 34 in adjusted position by means of screws 46. The spring 42 is weaker than the spring 38 so that under normal transfer conditions the nose il will yield without causi-ngrel'ative movement of the tubular sections.

It occasionally happens that a bobbin will beso slow in arriving at transfer position as to be engaged by the transterrer 47 while thebobbin is still on section 36. When this happens thesaid section will move to the dotted, line position shown at by the yielding of spring 38. On the other hand should the transfer be improper so that a portion of the bobbin projects above the shuttle to engage the nose il the latter will be moved upwardly to the dotted line position shown at in Fig. 2. It will be noticed that the exterior surfaces of the several parts of the giveway present a substantially smooth and uninterrupted surface down-which the ribbon may rolland at the longitudinal position of the support, mayv be adjusted by means of screw 32 on the bracket 30.

From the foregoing it will be seen that we have provided a simple form of bobbin support having the movable portions thereot'yieldable in all angular directions with respect to the supporting structure and having the weaker spring which holds the nose 41 in normal position located inside the tube where it is out of contact with the spring 38 and that the latter spring frictionally engages the sections 34 and 36 to hold the same together and in substantial alignment.

Having thus described our invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and we do not wish to be limited to the details herein disclosed, but what we claim is: I V

1. In a weft replenishing mechanism for looms, an angularly adjustable holding means mounted on the mechanism, a bobbin support carried thereby and formed of a pair of sections, and a, coil spring trictionally engaging exterior-portions of the sections to permit yielding relative motion of said sections.

2. In a weft replenishing mechanism for looms, a supporting structure mounted on and angularly adjustable with. respect to the mechanism, a bobbin support comprisa pair of tubular sections one of which is held by the supporting structure, adjacent portions of said tubular sections being reduced in diameter, and a coil spring tricti nally engaging the reduced adjacent portions of the tubular sections to support the other or said sectibns for angular motion in all dir ctions with respect to the supported sections, the outsine diamete of the spring being substantialiy thesame as thediaineters of the unreduced portions of said sections. 7

3. In a. weft. replenishing mechanism, supporting structure mounted on and angularly adjustable with respect to the mecha ism, and a hollow bobbin supporthaving two sections, yield'able means attached to the outer portions of the sections, a bobbin supporting nose adjacent one/oisaid sections, and yielding means passingthrough the-secticns for holding said noseln normal POS1' tion.

4.1K bobbin support for loom weft re-V plenishing mechanism comprising a pair of tubular sections having reduced adjacent portions, and a coil spring the inside diameter of which, is less than the outside diameter of the reduced portions of said sect-ions, said spring. being trictionally mounted on the reduced sections.

5. A bobbin support for loom weft replenishing mechanismcomprising a pair of" tubular sections, a spring friction'ally gaging the exterior portions otthe tubular sections, a nose located adjacent one of said tubular sections, and a sp 'ing located with in the sections and connected to the nose to hold the latter in normal position, the last named spring being weaker than the first named spring and being spaced from the latter by portions of the tubular sections.

6. in a weft replenishing mechanism for looms, a holder fixed relatively to the mechanism, a bobbin support mounted on the holder, said support having a portion held to the holder and another portion to engage a bobbin, and a spring having holding contact with the exteriors of the portions to old the bobbin enga ing portion yieldable relatively to the portion held by the holder.

7. A bobbin support for loom weft replenishing mechanism, said support COH1- prising a pair of members one of which is formed for cooperation with supper structure and the other member ofwhich engages a bobbin, said support. further including a resilient device, having holding contact with a portion of the exterior of each member to hold said bobbin engaging member yieldable relatively to the first named member.

8. In a weft replenishing mechanism for looms, a bobbin support a portion of which is held rigidly with respect to the replenishing mechanism and has a surface along which a bobbin may roll, a second portion for the support also having a surface along which a bobbin may roll, and a resilient device engaging part of the exterior of each portion oi? the support to connect said por- 5 tions together and afford a yielding mounting for the second named portion, said resilient device having a bobbin engaging sur face in substantial alignment with the surface of said portions along which a bobbin may r011.

In testimony whereof we have hereunto affixed our signatures.

CHKRLES M. ERLER. AUGUSTIN J. OHEVRETTE. 

